Interviews

Rock Glaciers Help Protect Species in a Warmer Climate

Posted by on Feb 22, 2017 in Adaptation, Featured Posts, Images, Interviews, Science | 0 comments

Rock Glaciers Help Protect Species in a Warmer Climate

Spread the News:ShareIn a recent study by Duccio Tampucci et al., rock glaciers in the Italian Alps have been shown to host a wide variety of flora and fauna, supporting plant and arthropod species during temporary decadal periods of climatic warming. Certain species that thrive in cold conditions have been prone to high environmental stress during warm climate stages in the past, but given the results of Tampucci’s research, it is now clear that these species may be able to survive in periglacial settings on the edge of existing glaciers. Active rock glaciers, commonly found on the border of larger glaciers and ice sheets, are comprised of coarse debris with intermixed ice or an ice-core. The study has valuable implications on how organisms may respond to changes in temperature, offering a possible explanation for species’ resiliency. Jonathan Anderson, a retired Glacier National Park ranger, spoke to GlacierHub about the importance of periglacial realms in providing a habitat for animals displaced by modern climate change. “In the years spent in and around the park, it’s clear that more and more animals are feeling the impact of climate change and global warming,” he said. “The areas surrounding the larger glaciers are becoming even more important than before and are now home to many of the species that lived on the receded glacier.” In their study, Tampucci and team analyzed abiotic dimensions of active rock glaciers such as ground surface temperature, humidity and soil chemistry, as well as biotic factors related to the species abundance of plants and arthropods. This data was then compared to surrounding iceless regions characterized by large scree slopes (small loose stones covering mountain slopes) as an experimental control for the glaciated landforms of interest. Comparisons between these active scree slopes and rock glaciers revealed similar soil geochemistry, yet colder ground surface temperatures existed on the rocky glaciers. Thus, more cold-adapted species existed on rock glaciers. The distribution of plant and arthropod species was found to be highly variable, dependent upon soil pH and the severity of mountain slope-instability. This variability is because the fraction of coarse debris and quantity of organic matter changes with the landform’s activity, or amount of mass wasting occurring downslope. The study notes that the heterogeneity in landforms in mountainous regions augments the overall biodiversity of the region. Anderson affirmed this idea, noting, “The difference in habitats between glaciated terrain and the surrounding, more vegetated regions is crucial for allowing a wide range of animals to coexist.” This variety of landforms contributes to a wide variety of microclimates in which ecologically diverse organisms can reside in close proximity. Cold-adapted species are likely the first to be affected by region-wide seasonal warming. As temperatures increase, cold-weather habitats are liable to reduce in size and shift to higher altitudinal belts, resulting in species reduction and possible extirpation. Tampucci et al.’s study affirmed the notion that active rock glaciers serve as refugia for cold-adapted species due to the landscape’s microclimate features. The local periglacial environment in the Italian Ortles-Cevedale Massif, for example, was shown to be decoupled from greater regional climate, with sufficient thermal inertia (resistance to temperature change) to support cold-adapted species on a decadal timescale. Despite the conclusive findings that largely affirm previous assumptions about biodiversity in active rock glaciers, the authors carefully point out that the glacier’s ability to serve as refugia for certain species depends entirely on the length of the warm-climate stage, which can potentially last for millennia. Additionally, the macroclimatic context in which the glaciers reside is important and can influence the landform’s thermal inertia, affecting the temporal scale at...

Read More

Seasonal Lake Changes on the Tibetan Plateau

Posted by on Jan 31, 2017 in All Posts, Featured Posts, Interviews, Science | 0 comments

Seasonal Lake Changes on the Tibetan Plateau

Spread the News:ShareThe Kunlun Mountains, featured as a mythical location in the legendary Chinese text Shanhai Jing, are one of the longest mountain chains in Asia. From the Pamirs of Tajikistan, the mountains run east along the border of Xinjiang and Tibet to the Qinghai province, forming part of the Tibetan Plateau. A number of important glaciers and lakes are found in the area, attracting glaciology researchers to the region throughout the year. Yanbin Lei, an associate research fellow at the Chinese Academy of Sciences, is one scientist conducting important field work in the region. Recently, Lei et al. published a paper  in the American Geophysical Union Journal Geophysical Research Letters that describes how lakes in the Tibetan Plateau are growing and deepening due to climate change. In particular, the scientists identified two patterns of lake level seasonality. Because the climate is warming, an earlier melt and a relatively large increase in spring runoff are observed for all scenarios. This in turn increases water availability in the Indus Basin irrigation scheme during the spring growing season, according to Lei et al. This finding projects that rainfall will increase, according to another study by Su er al. In addition,  the discharge in the major large rivers of South and East Asia will also increase. “Though crucial, the paucity of instrumental data from the sparsely populated Tibetan Plateau has limited scientific investigations of hydroclimate response to recent climate change,” Lei told GlacierHub. The Tibetan Plateau has a large spatial coverage and high elevation (the average latitude is over 4000 meters), not to mention an incredibly harsh climatic condition, which makes conducting research and taking measurements difficult. Because the seasonal dynamics of the lakes is not sufficiently understood, the research conducted by Lei et al. in the Tibetan Plateau was unprecedented. “In general, there is a lack of monitoring of lake levels in the Kunlun Mountains, and consequently, data is missing for the lakes,” Lei  added. “Even if remote sensing were developed as a major method for studying inter-annual changes of lakes, the accuracy and frequency of this method would still be limited to study seasonal changes.” With the help of “situ observations,” Cryosat-2 satellite altimetry data between 2010 and 2014, and Gravity Recovery and Climate Experiment (GRACE) data, Lei et al. managed to identify two patterns of lake level seasonality. “In the central, northern, and northeastern Tibetan Plateau, lake levels are characterized by considerable increases during warm seasons and decreases during cold seasons, which is consistent with regional mass changes related to monsoon precipitation and evaporation,” Lei et al. describe in their paper.  “In the northwestern Tibetan Plateau, however, lake levels exhibit dramatic increases during both warm and cold seasons, which deviate from regional mass changes.” In an interview with GlacierHub, Lei summarized the reasons for this finding: “The difference was mainly caused by the glaciers and precipitation. There are widespread glaciers in the northwest Tibetan Plateau and the area of glaciers is larger than the area of lakes. The precipitation in summer is also low, resulting in high spring snowfall and large summer glacier melt to feed the lake. Meanwhile, in the northern Tibetan Plateau, there are fewer glaciers but more summer rainfall, causing an increase in the lake level,” Lei told GlacierHub. Additionally, the seasonal difference of precipitation is also important. Annual precipitation in the northern Tibetan Plateau is 300-400 mm with 90 percent of precipitation occurring in summer, according to Lei. Annual precipitation in the northwest Tibetan Plateau is about 200 mm because spring snowfall counts more. “The lake level responses to different drivers indicates heterogeneous sensitivity to climate...

Read More

Extreme Skiing Expedition Raises Climate Change Awareness

Posted by on Jan 25, 2017 in All Posts, Art/Culture, Experiences, Featured Posts, Images, Interviews, News, Sports | 0 comments

Extreme Skiing Expedition Raises Climate Change Awareness

Spread the News:ShareAs glacial ice melts due to global warming, explorers Borge Ousland and Vincent Colliard are in the process of skiing across the world’s 20 largest glaciers to raise awareness about climate change. Deemed the Alpina & Ice Legacy Project, the plan seeks to have the duo cross the world’s most isolated glacial realms over the next 10 years. Ousland hopes that his expeditions will help in develop “new technology, political will, and [understanding about] what’s going on,” according to a November 2016 interview with National Geographic. Given the current state of climate change, the two men may not only be the first to accomplish the feat of traveling the world’s 20 largest glaciers, but also the last.  Both athletes are decorated skiers, with combined expedition experience across all seven continents in the past decade. Borge Ousland, the team’s leader, is credited with the first and fastest solo expedition to the North Pole, a journey that took more than 50 days and resulted in severe weight loss and frostbite. Still, only three years later, Ousland became the first to ski 1,864 miles across Antarctica completely unsupported. Now, for the Ice Legacy Project, 54-year-old Ousland has teamed up with 30-year-old Frenchman Vincent Colliard for a multi-stage glacier expedition. Derek Parron, an experienced backcountry skier and owner of  Rocky Mountain Underground ski company, attested to the audacity of Ousland and Colliard’s expedition in an interview with GlacierHub: “In all my years of doing long ski treks in the backcountry, I’ve never heard of a team working towards such an extraordinary goal,” he said. “Despite the wealth of experience between the two of them, their project is extremely dangerous with a lot of factors that could potentially go wrong.”  The skiing and mountaineering community has a great deal of respect for the duo’s ongoing project, and Parron pointed out that “not only are they touring across the world’s largest glaciers, but they’re documenting the entire process for the world to see.”   Maintaining a presence on social media is an important piece of the project, allowing the public to track the team’s progress across the numerous expeditions. “The world needs to find technical and political solutions to the environmental crisis,” Ousland told GlacierHub. “This long-term expedition is meant to be an incubator to that process, a visual example and a window to what is happening.” Despite the risks, the duo has already successfully completed two goals of their project with funding support from watchmaker Alpina: crossing the Stikine Glacier in Alaska and the St. Elias-Wrangell Mountains  Ice Field.   “We’d get up at 5 a.m., eat breakfast, check to see if we got news from the outside world, then start skiing at 8 a.m,”  Colliard commented to National Geographic about a normal expedition day. “We’d ski for nine hours, towing our sleds, which were about 175 pounds per person, taking 15-minute breaks every hour.” The team would cover approximately 12 miles every day, making sure to keep sufficient food available to sustain a 5,000-calorie daily diet.  Given the dangers of crossing glacier fields in Alaska, the team’s effort to raise awareness about climate change is all the more admirable. Their project outline states that the plan “combines athletic prowess, human adventure and the sharing of knowledge about the polar environment with as many people as possible, so that future generations may enjoy the fascinating and priceless legacy of glaciers and icecaps.” In order to achieve these goals, Ousland described three major dangers that exist when traveling in isolated glacial environments: hidden crevasses, powerful avalanches from the mountains above, and inclement weather in...

Read More

Roundup: Volcanoes, Cryoseismology and Hydropower

Posted by on Dec 5, 2016 in All Posts, Featured Posts, Interviews, News, Roundup | 0 comments

Roundup: Volcanoes, Cryoseismology and Hydropower

Spread the News:ShareRoundup: Kamchatka, Cryoseismology and Bhutan   Activity in Kamchatka’s Glacier-Covered Volcanoes From KVERT: “The Kamchatka Volcanic Eruption Response Team (KVERT) monitors 30 active volcanoes of Kamchatka and six active volcanoes of Northern Kuriles [both in Russia]. Not all of these volcanoes had eruptions in historical time; however, they are potentially active and therefore are of concern to aviation... In Russia, KVERT, on behalf of the Institute of Volcanology and Seismology (IVS), is responsible for providing information on volcanic activity to international air navigation services for the airspace users.” Many of these volcanoes are glacier-covered, and the interactions between lava and ice can create dramatic ice plumes. Sheveluch Volcano currently has an orange aviation alert, with possible “ash explosions up to 26,200-32,800 ft (8-10 km) above sea level… Ongoing activity could affect international and low-flying aircraft.” Read more about the volcanic warnings here, or check out GlacierHub’s collection of photos from the eruption of Klyuchevskoy.   New Insights Into Seismic Activity Caused by Glaciers  In Reviews of Geophysics: “New insights into basal motion, iceberg calving, glacier, iceberg, and sea ice dynamics, and precursory signs of unstable glaciers and ice structural changes are being discovered with seismological techniques. These observations offer an invaluable foundation for understanding ongoing environmental changes and for future monitoring of ice bodies worldwide… In this review we discuss seismic sources in the cryosphere as well as research challenges for the near future.” Read more about the study here.   The Future of Hydropower in Bhutan From TheThirdPole.net: An interview with Chhewang Rinzin, the managing director of Bhutan’s Druk Green Power Corporation, reveals the multifaceted challenges involved in hydropower projects in Bhutan. These challenges include the effect of climate change on glaciers: “The glaciers are melting and the snowfall is much less than it was in the 1960s and 70s. That battery that you have in a form of snow and glaciers up there – which melts in the spring months and brings in additional water – will slowly go away…But the good news is that with climate change, many say that the monsoons will be wetter and there will be more discharge,” said Rinzin. Check out the full interview with Chhewang Rinzin here. For more about hydropower in Bhutan, see GlacierHub’s earlier story. Spread the...

Read More

Asian Piolets d’Or Awards Recognize Outstanding Alpine Athleticism

Posted by on Nov 30, 2016 in Art/Culture, Featured Posts, Interviews, News, Sports | 0 comments

Asian Piolets d’Or Awards Recognize Outstanding Alpine Athleticism

Spread the News:ShareOn November 4th, the International Climbing and Mountaineering Federation (UIAA) held the 11th annual Asia Piolets d’Or awards, commemorating outstanding achievements in rock climbing and mountaineering. Considered by many to be the Oscars of alpinism, the awards have motivated progression in Asian mountaineering culture over the last decade, contributing to an ethos of safety, respect and athleticism in alpine and glacial environments. The awards honor athletes who employ lightweight, alpine-style tactics in their expeditions, rewarding a commitment to technical face climbing and positive environmental stewardship while in the mountains. These alpine style expeditions generally use less gear, leave less waste on the mountain and exemplify respect for the outdoors. At this year’s event in Seoul, Korea, six winners of the Piolets d’Or Asia were announced (comprising two climbing teams) along with recipients of the Golden Climbing Shoe Award and the coveted Piolets d’Or Lifetime Achievement accolade. In an interview with GlacierHub, American Alpine Club lifetime member Edward Rinkowski spoke to the prestige of the ceremony by stating, “Winning a Piolet d’Or is arguably the highest of achievements in climbing beyond one’s personal climbing goals. No one really sets out to win one, but if the academy recognizes you, it means you’re doing something right. ” Award recipients belonged to a pair of teams, one from South Korea and the other from Japan. Led by Chang-Ho Kim, the Korean team of three successfully established a new route on the south face of Mt. Gangapurna, a glaciated 7,455 meter (24,459 feet) peak in the west Nepalese Annapurna region. Gangapurna was first climbed by a German expedition in 1965. Since then, only eight teams have successfully reached its summit. Kim, along with his climbing partners Suk-Mun Choi and Joung-Yong Park, ascended  Gangapurna’s south face via a new, technically demanding route full of glacial ice and loose rock. They managed to leave no trace of their climb, having recovered all of their gear and expedition waste from the mountain. Rinkowski, who has climbed in this region, told GlacierHub, “The combination of technical climbing and high altitudes can be absolutely brutal. Hearing that the team recovered all of their gear is extremely impressive.” The expedition’s leader Kim is a laudable recipient of the Piolets d’Or award, having completed all 14 of the Himalayan Giants — Earth’s peaks looming taller than 8,000 meters — by 2016. The Japanese team that received the Piolets d’Or honor also consisted of three members: Koji Ito, Yusuke Sato and Kimihiro Miyagi. The group of athletes successfully climbed the Golden Pillar in the Tsurugidake Kurobe Valley, a 380m near vertical rock face in Japan. Their climb required a dangerous snow-covered bivouac (a temporary camp without tents) overnight, which subjected the team to hypothermia and frostbite. Additionally, the climb involved nine hanging belays, meaning that the team rarely had the opportunity to rest on ledges and solid ground after they set off from the ground. The Kurobe Valley is considered by many alpinists to be more difficult than climbing Himalayan peaks of comparable prominence and is known for experiencing unpredictable, powerful winter storms. The team lived in the snowy region for 22 days, spending much of their time trapped in a tent awaiting a safe weather window to attempt the climb. Having been on many alpine expeditions himself, Rinkowski talked to GlacierHub about the Japanese team’s climb. “Being stuck in such a desperate situation not only puts stress on the climbers physically, but even more so mentally,” he said. “Riding out such a long storm window can be demoralizing.” Despite the adverse conditions and difficulty of the ascent, the...

Read More

Creating the World’s First Ice Core Bank in Antarctica

Posted by on Nov 15, 2016 in All Posts, Featured Posts, Interviews, Science | 0 comments

Creating the World’s First Ice Core Bank in Antarctica

Spread the News:ShareGlaciers contain valuable information about past environments on Earth within the layers of ice that accumulate over hundreds or thousands of years. However, alpine glaciers have lost 50 percent of their mass since 1850, and projections suggest that glaciers below 3500m will not exist by 2100. Concerns about the loss of this valuable resource motivated Jérôme Chappellaz, a senior scientist at France’s National Center for Scientific Research (CNRS), and an international team of glaciologists, to create the world’s first archive of ice cores from different parts of the world. Ice cores are cylindrical sections of ice sheets or glaciers collected by vertical drilling. Chemical components within different layers of ice in glaciers, such as gases, heavy metals, chemical isotopes (forms of the same element with different numbers of neutrons in their nuclei) and acids, allow scientists to study past atmospheric composition and to draw inferences on environmental variables such as temperature changes and sea levels. Cores will be extracted between now and 2020, after which they will be transported for storage to Concordia Station in Antarctica, a joint French-Italian base located on the Antarctic Plateau. Antarctica serves as a natural freezer, allowing the cores to be stored 10 meters below the surface at temperatures of -54°C. International management of the archive, which will be large enough to contain cores from up to 20 glaciers, will be facilitated by the lack of territorial disputes in Antarctica. The first cores that will go into the archive were collected in summer 2016 between August 16th and 27th. Over this time period, two teams of French, Italian and Russian researchers successfully collected three ice cores, each 130 meters long and 92 millimeters in diameter, from France’s Col du Dôme glacier (4300m above sea level) on Mont Blanc, the highest mountain in the Alps. Drilling was carried out within drilling tents at nighttime because daytime temperatures were too high. The cores were then cut into one meter sections for storage and transportation purposes. “The cores are currently stored in our commercial freezers at Grenoble, France, waiting for the long term storage cave at Concordia Station in Antarctica to be built,” Chappellaz told GlacierHub. “One of the three cores will be used during the coming two years to produce reference records of all tracers (chemical components of ice that reveal information about the natural environment) that can be measured with today’s technologies.” The next drilling for the archive will take place in May 2017 at Illimani glacier in the Bolivian Andes (6300m above sea level). As with the drilling at Col du Dôme glacier, the project will be overseen by Patrick Ginot, a research engineer at the Laboratory of Glaciology and Environmental Geophysics (LGGE) in Grenoble. The collection of ice cores has relied on intense international collaboration, and Ginot will be working with glaciologists from Bolivia to extract the cores. Illimani is one of the few Latin American glaciers that contains information stretching back to the last glacial maximum around 20,000 years ago. Although ice cores collected from the Arctic and Antarctica, such as those from Dome C, provide information stretching back to that period, the value of the cores lies in the information they are able to provide about specific regions. For example, ice cores from France’s Col du Dôme glacier can provide information about European industrial emissions, while ice cores from Bolivia’s Illimani glacier could offer insight into the history of biomass burning in the Amazon basin. Glaciers will be selected based on a number of criteria, with priority given to glaciers that contain large amounts of information about the regions from...

Read More